Here's How:
1. Place at least one eligible Monsters University Store item in your Cart.
2. Click the Checkout button to process transaction through DisneyStore.com.
3. Type the Promotion Code MONSTERS into the “Add Promo Code” area.
4. The $2 Window Cling purchase with purchase item will be added to your bag and $2 pricing will be applied, if eligible.
5. Continue Shopping or Begin Checkout.

Limited-time offer, while supplies last. Purchase with Purchase pricing applies to orders including an item from the MonstersUniversity.com online store. The $2 pricing will apply to the Window Cling with use of code MONSTERS at checkout through DisneyStore.com. Qualifying purchase based on pre-tax, post-discount amount. Merchandise must be exchanged for identical item or returned at discounted price with valid packing slip. Offer valid on orders placed online at DisneyStore.com. Offer can be combined with shipping offers, but cannot be combined with other offers. Not valid on phone orders or purchases made at Disney Store and Disney Baby retail and outlet locations. Promotion Code may not be redeemed for cash. Limit one Promotional Offer per Household. Promotion Code may not be sold, altered, duplicated or copied and will not be replaced if lost, stolen or corrupted. Use of Promotion Code is acceptance of its terms. Disney E-Commerce reserves the right to cancel or modify this offer at any time.
Void where prohibited.